Indicators: Institutional Kyle's Lambda Market Impact Engine
//+------------------------------------------------------------------+ //| Prop_ATR_Trail_Manager.mq4 | //| Copyright 2026, Amanda V | //+------------------------------------------------------------------+ #property copyright "Amanda V" #property version "1.04" #property strict //--- Inputs input int InpATRPeriod = 14; // ATR Period input double InpATRMultiplier = 2.0; // ATR Multiplier input int InpBEActivation = 20; // Pips in profit to activate BE input int InpBELockProfit = 2; // Pips to lock in profit (covers fees) input int InpMagicNumber = 0; // Magic Number (0 = Manual Trades) double pt; double pip_mult; // Runtime toggles bool UseBreakeven = true; bool UseTrailing = true; //+------------------------------------------------------------------+ int OnInit() { pt = Point; pip_mult = (Digits == 3 || Digits == 5) ? 10.0 : 1.0; // Create chart buttons CreateButton("btnBE","Breakeven: ON",10,20,120,20,clrGreen); CreateButton("btnTR","Trailing: ON",10,50,120,20,clrBlue); // Create dashboard labels CreateLabel("lblATR","ATR: --",150,20,clrWhite); CreateLabel("lblTrail","Trail Dist: --",150,40,clrWhite); CreateLabel("lblStatus","Status: --",150,60,clrWhite); Print("ATR Trail Manager Initialized."); return(INIT_SUCCEEDED); } //+------------------------------------------------------------------+ void OnDeinit(const int reason) { ObjectDelete("btnBE"); ObjectDelete("btnTR"); ObjectDelete("lblATR"); ObjectDelete("lblTrail"); ObjectDelete("lblStatus"); } //+------------------------------------------------------------------+ void OnChartEvent(const int id,const long &lparam,const double &dparam,const string &sparam) { if(id==CHARTEVENT_OBJECT_CLICK) { if(sparam=="btnBE") { UseBreakeven = !UseBreakeven; ObjectSetString(0,"btnBE",OBJPROP_TEXT,UseBreakeven?"Breakeven: ON":"Breakeven: OFF"); ObjectSetInteger(0,"btnBE",OBJPROP_BGCOLOR,UseBreakeven?clrGreen:clrRed); } else if(sparam=="btnTR") { UseTrailing = !UseTrailing; ObjectSetString(0,"btnTR",OBJPROP_TEXT,UseTrailing?"Trailing: ON":"Trailing: OFF"); ObjectSetInteger(0,"btnTR",OBJPROP_BGCOLOR,UseTrailing?clrBlue:clrRed); } } } //+------------------------------------------------------------------+ void OnTick() { double atr_value = iATR(Symbol(),PERIOD_CURRENT,InpATRPeriod,1); double trail_distance = atr_value * InpATRMultiplier; double be_activation_pts = InpBEActivation * pip_mult * pt; double be_lock_pts = InpBELockProfit * pip_mult * pt; // Update dashboard ObjectSetString(0,"lblATR",OBJPROP_TEXT,"ATR: "+DoubleToString(atr_value,Digits)); ObjectSetString(0,"lblTrail",OBJPROP_TEXT,"Trail Dist: "+DoubleToString(trail_distance,Digits)); ObjectSetString(0,"lblStatus",OBJPROP_TEXT, "BE: "+(UseBreakeven?"ON":"OFF")+" | TR: "+(UseTrailing?"ON":"OFF")); for(int i=OrdersTotal()-1; i>=0; i--) { if(OrderSelect(i,SELECT_BY_POS,MODE_TRADES)) { if(OrderSymbol()!=Symbol()) continue; if(InpMagicNumber!=0 && OrderMagicNumber()!=InpMagicNumber) continue; double open_price = OrderOpenPrice(); double current_sl = OrderStopLoss(); int type = OrderType(); if(type==OP_BUY) { double bid = Bid; // Breakeven if(UseBreakeven && bid >= open_price+be_activation_pts) { double new_be_sl = open_price+be_lock_pts; if((current_sl<new_be_sl || current_sl==0) && new_be_sl<bid) { if(!OrderModify(OrderTicket(),open_price,new_be_sl,OrderTakeProfit(),0,clrGreen)) Print("OrderModify failed BUY BE ",GetLastError()); else current_sl=new_be_sl; } } // Trailing if(UseTrailing) { double new_trail_sl = bid-trail_distance; if(new_trail_sl>current_sl && new_trail_sl<bid) { if(current_sl==0 || new_trail_sl-current_sl>(2*pip_mult*pt)) { if(!OrderModify(OrderTicket(),open_price,new_trail_sl,OrderTakeProfit(),0,clrBlue)) Print("OrderModify failed BUY trail ",GetLastError()); } } } } else if(type==OP_SELL) { double ask = Ask; // Breakeven if(UseBreakeven && ask <= open_price-be_activation_pts) { double new_be_sl = open_price-be_lock_pts; if((current_sl>new_be_sl || current_sl==0) && new_be_sl>ask) { if(!OrderModify(OrderTicket(),open_price,new_be_sl,OrderTakeProfit(),0,clrGreen)) Print("OrderModify failed SELL BE ",GetLastError()); else current_sl=new_be_sl; } } // Trailing if(UseTrailing) { double new_trail_sl = ask+trail_distance; if((current_sl==0 || new_trail_sl<current_sl) && new_trail_sl>ask) { if(current_sl==0 || current_sl-new_trail_sl>(2*pip_mult*pt)) { if(!OrderModify(OrderTicket(),open_price,new_trail_sl,OrderTakeProfit(),0,clrRed)) Print("OrderModify failed SELL trail ",GetLastError()); } } } } } } } //+------------------------------------------------------------------+ // Helpers void CreateButton(string name,string text,int x,int y,int w,int h,color bg) { if(ObjectFind(0,name)<0) { ObjectCreate(0,name,OBJ_BUTTON,0,0,0); ObjectSetInteger(0,name,OBJPROP_XDISTANCE,x); ObjectSetInteger(0,name,OBJPROP_YDISTANCE,y); ObjectSetInteger(0,name,OBJPROP_XSIZE,w); ObjectSetInteger(0,name,OBJPROP_YSIZE,h); ObjectSetInteger(0,name,OBJPROP_BGCOLOR,bg); ObjectSetInteger(0,name,OBJPROP_COLOR,clrWhite); ObjectSetInteger(0,name,OBJPROP_FONTSIZE,10); ObjectSetString(0,name,OBJPROP_TEXT,text); } } void CreateLabel(string name,string text,int x,int y,color col) { if(ObjectFind(0,name)<0) { ObjectCreate(0,name,OBJ_LABEL,0,0,0); ObjectSetInteger(0,name,OBJPROP_XDISTANCE,x); ObjectSetInteger(0,name,OBJPROP_YDISTANCE,y); ObjectSetInteger(0,name,OBJPROP_COLOR,col); ObjectSetInteger(0,name,OBJPROP_FONTSIZE,10); ObjectSetString(0,name,OBJPROP_TEXT,text); } }
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Institutional Kyle's Lambda Market Impact Engine:
An institutional market microstructure indicator for MT4 that computes Kyle's Lambda and Amihud Illiquidity ratios to identify institutional order absorption and toxic liquidity vacuums.
Author: Amanda Vitoria De Paula Pereira